Preparation and characterization of hydrophobic and hydrophilic amidated derivatives of carboxymethyl chitosan and carboxymethyl beta-glucan

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22330%2F20%3A43920790" target="_blank" >RIV/60461373:22330/20:43920790 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0141813020340174?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0141813020340174?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijbiomac.2020.07.257" target="_blank" >10.1016/j.ijbiomac.2020.07.257</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Preparation and characterization of hydrophobic and hydrophilic amidated derivatives of carboxymethyl chitosan and carboxymethyl beta-glucan

Popis výsledku v původním jazyce

Chitosan and beta-glucan are substances that are very widely used in the pharmaceutical and food industries, medicine and other areas. These polysaccharides have immense significance in human metabolism. They are able to affect the levels of cholesterol and lipids. Chemical modification of these polysaccharides allows the support of these attributes. A main goal is to prepare a group of amide derivatives of carboxymethyl chitosan and carboxymethyl beta-glucan to obtain a new group of polysaccharide derivatives and increase the benefits and attributes of these polysaccharides. The aim of carboxymethylation and subsequent two-step amidation is to achieve a high degree of substitution in the prepared derivatives. The amidation consisted methyl esterification followed by amino-de-alkoxylation with amidation reagents (n-alkylamines, hydrazine and hydroxylamine). The purity and substitution degree of the prepared derivatives were monitored by vibration spectroscopic methods (FTIR and FT Raman) and organic elemental analysis. The main, which was due to the presence of a secondary component (chitin) of polysaccharides, was the calculation of the substitution degree, which was based on the organic elemental analysis in combination with FTIR spectroscopy. These analytic methods confirmed the preparation of the substituted N-alkylamides, hydrazide and hydroxamic acid of carboxymethyl chitosan and carboxymethyl beta-glucan.

Název v anglickém jazyce

Preparation and characterization of hydrophobic and hydrophilic amidated derivatives of carboxymethyl chitosan and carboxymethyl beta-glucan

Popis výsledku anglicky

Chitosan and beta-glucan are substances that are very widely used in the pharmaceutical and food industries, medicine and other areas. These polysaccharides have immense significance in human metabolism. They are able to affect the levels of cholesterol and lipids. Chemical modification of these polysaccharides allows the support of these attributes. A main goal is to prepare a group of amide derivatives of carboxymethyl chitosan and carboxymethyl beta-glucan to obtain a new group of polysaccharide derivatives and increase the benefits and attributes of these polysaccharides. The aim of carboxymethylation and subsequent two-step amidation is to achieve a high degree of substitution in the prepared derivatives. The amidation consisted methyl esterification followed by amino-de-alkoxylation with amidation reagents (n-alkylamines, hydrazine and hydroxylamine). The purity and substitution degree of the prepared derivatives were monitored by vibration spectroscopic methods (FTIR and FT Raman) and organic elemental analysis. The main, which was due to the presence of a secondary component (chitin) of polysaccharides, was the calculation of the substitution degree, which was based on the organic elemental analysis in combination with FTIR spectroscopy. These analytic methods confirmed the preparation of the substituted N-alkylamides, hydrazide and hydroxamic acid of carboxymethyl chitosan and carboxymethyl beta-glucan.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10404 - Polymer science

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

International Journal of Biological Macromolecules

ISSN

0141-8130

e-ISSN

—

Svazek periodika

163

Číslo periodika v rámci svazku

Neuveden

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

1433-1443

Kód UT WoS článku

000579839600143

EID výsledku v databázi Scopus

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